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47 :
48 : #ifndef FiniteDifferenceGroundTemperatureModel_hh_INCLUDED
49 : #define FiniteDifferenceGroundTemperatureModel_hh_INCLUDED
50 :
51 : // C++ Headers
52 : #include <memory>
53 :
54 : // ObjexxFCL Headers
55 : #include <ObjexxFCL/Array1D.hh>
56 : #include <ObjexxFCL/Array2D.hh>
57 : #include <ObjexxFCL/Optional.hh>
58 :
59 : // EnergyPlus Headers
60 : #include <EnergyPlus/EnergyPlus.hh>
61 : #include <EnergyPlus/GroundTemperatureModeling/BaseGroundTemperatureModel.hh>
62 :
63 : namespace EnergyPlus {
64 :
65 : // Forward declarations
66 : struct EnergyPlusData;
67 :
68 : // Derived class for Finite-Difference Model
69 2 : class FiniteDiffGroundTempsModel : public BaseGroundTempsModel
70 : {
71 :
72 : static int constexpr maxYearsToIterate = 10;
73 :
74 : Real64 rhoCp_soil_liq_1;
75 : Real64 rhoCP_soil_liq;
76 : Real64 rhoCP_soil_transient;
77 : Real64 rhoCP_soil_ice;
78 :
79 : public:
80 : Real64 baseConductivity;
81 : Real64 baseDensity;
82 : Real64 baseSpecificHeat;
83 : int totalNumCells;
84 : Real64 timeStepInSeconds;
85 : Real64 evapotransCoeff;
86 : Real64 saturatedWaterContent;
87 : Real64 waterContent;
88 : Real64 annualAveAirTemp;
89 : Real64 minDailyAirTemp; // Set hi. Will be reset later
90 : Real64 maxDailyAirTemp; // Set low. Will be reset later
91 : Real64 dayOfMinDailyAirTemp;
92 : Real64 depth;
93 : Real64 simTimeInDays;
94 :
95 : // Default constructor
96 1 : FiniteDiffGroundTempsModel() : minDailyAirTemp(100.0), maxDailyAirTemp(-100.0), dayOfMinDailyAirTemp(1)
97 : {
98 1 : }
99 :
100 1 : struct instanceOfCellData
101 : {
102 :
103 : struct properties
104 : {
105 : Real64 conductivity;
106 : Real64 density;
107 : Real64 specificHeat;
108 : Real64 diffusivity;
109 : Real64 rhoCp;
110 : };
111 :
112 : properties props;
113 :
114 : int index;
115 : Real64 thickness;
116 : Real64 minZValue;
117 : Real64 maxZValue;
118 : Real64 temperature;
119 : Real64 temperature_prevIteration;
120 : Real64 temperature_prevTimeStep;
121 : Real64 temperature_finalConvergence;
122 : Real64 beta;
123 : Real64 volume;
124 : Real64 conductionArea = 1.0; // Assumes 1 m2
125 : };
126 :
127 : Array1D<instanceOfCellData> cellArray;
128 :
129 : struct instanceOfWeatherData
130 : {
131 : Real64 dryBulbTemp;
132 : Real64 relativeHumidity;
133 : Real64 windSpeed;
134 : Real64 horizontalRadiation;
135 : Real64 airDensity;
136 : };
137 :
138 : Array1D<instanceOfWeatherData> weatherDataArray;
139 :
140 : static std::shared_ptr<FiniteDiffGroundTempsModel> FiniteDiffGTMFactory(EnergyPlusData &state, std::string objectName);
141 :
142 : void getWeatherData(EnergyPlusData &state);
143 :
144 : void initAndSim(EnergyPlusData &state);
145 :
146 : void developMesh();
147 :
148 : void performSimulation(EnergyPlusData &state);
149 :
150 : void updateSurfaceCellTemperature(EnergyPlusData &state);
151 :
152 : void updateGeneralDomainCellTemperature(int const cell);
153 :
154 : void updateBottomCellTemperature();
155 :
156 : void initDomain(EnergyPlusData &state);
157 :
158 : bool checkFinalTemperatureConvergence(EnergyPlusData &state);
159 :
160 : bool checkIterationTemperatureConvergence();
161 :
162 : void updateIterationTemperatures();
163 :
164 : void updateTimeStepTemperatures(EnergyPlusData &state);
165 :
166 : void doStartOfTimeStepInits();
167 :
168 : Real64 getGroundTemp(EnergyPlusData &state) override;
169 :
170 : Real64 getGroundTempAtTimeInSeconds(EnergyPlusData &state, Real64 const depth, Real64 const timeInSecondsOfSim) override;
171 :
172 : Real64 getGroundTempAtTimeInMonths(EnergyPlusData &state, Real64 const depth, int const monthOfSim) override;
173 :
174 : void evaluateSoilRhoCp(Optional<int const> cell = _, Optional_bool_const InitOnly = _);
175 :
176 : Real64 interpolate(Real64 const x, Real64 const x_hi, Real64 const x_low, Real64 const y_hi, Real64 const y_low);
177 :
178 : Array2D<Real64> groundTemps;
179 :
180 : Array1D<Real64> cellDepths;
181 :
182 : enum surfaceTypes
183 : {
184 : surfaceCoverType_bareSoil = 1,
185 : surfaceCoverType_shortGrass = 2,
186 : surfaceCoverType_longGrass = 3
187 : };
188 : };
189 :
190 : } // namespace EnergyPlus
191 :
192 : #endif
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